68672579 has 2 divisors, whose sum is σ = 68672580. Its totient is φ = 68672578.

The previous prime is 68672563. The next prime is 68672603. The reversal of 68672579 is 97527686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68672579 - 2⁴ = 68672563 is a prime.

It is a super-2 number, since 2×68672579² = 9431846213022482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68672509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34336289 + 34336290.

It is an arithmetic number, because the mean of its divisors is an integer number (34336290).

Almost surely, 2^68672579 is an apocalyptic number.

68672579 is a deficient number, since it is larger than the sum of its proper divisors (1).

68672579 is an equidigital number, since it uses as much as digits as its factorization.

68672579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The square root of 68672579 is about 8286.8919988135. The cubic root of 68672579 is about 409.5068013658.

The spelling of 68672579 in words is "sixty-eight million, six hundred seventy-two thousand, five hundred seventy-nine".